Lock



Sept. 15, 1942. c. J. HAGSTROM LOCK r V Filed Aug. 2, 1940 3 Sheets-Sheet 2 Carl J H INVENTORQ ag'trom Ek W 1 {I MWW Patented Sept. 15, 1942 UNITED STATES PATENT OFFICE LOCK Carl J. Hagstrom, Glen Cove, N. Y., assignor to Austral Sales Corporation, New York, N. Y., a corporation of New York Application August 2, 1940, Serial No. 349,733

21 Claims.

tandem locking mechanism in which a pair or.

plurality of lock are operated and controlled from a single or master lock.

It is an object of the invention to construct a lock in which several parts serve a plurality of functions, thereby simplifying the construction of the lock yet retaining the effective operation thereof. 7

Another object of th invention is to construct a lock and key in which the key carries a finger which must be in a generally parallel position with respect to the axis of the key upon insertion in the keyhole of the lock and which finger moves to a position at an angle with respect toth axis of the key after it is inserted in the keyhole. The finger in moving to its angular position releases a locking means which prevents actuation of the bolt operating mechanism of the lock until released by the finger.

Another object of the invention is to construct a lock having a minimum number of parts and such that the key cannot be withdrawn from the keyhole so long as the bolt i not fully extended from its casing or housing.

A further object is to construct a tandem lock mechanism of simplified construction in which the tandem or spaced lock is easily operated and looked under the control of the master lock.

Another object is to construct a lock which cannot be picked or is difiicult to do so.

A still further object i toconstruct a lock in which the operating handle is and must be depressed into the surrounding frame when the bolt is in extended or locked position.

Other objects of the invention will be more apparent from the following description taken in connection with the accompanying drawings, il-

lustrating preferred embodiments of the inven tion, in which:

Figures 1 through 6 illustrate one form of the lock.

Figure l is a front elevation of a guard screen hingedly mounted in a window and carrying tandem locks for locking th screen within the window frame.

Figure 2 is a longitudinal sectional view through a portion of the frame of a guard screen and a portion of the window frame showing tandem locks mounted in the former. The locks have a side plate of the casing removed to show the interior mechanism with the bolts in extended or locked screen position.

Figure 3 is a sectional view through the master lock with a side wall of the casing removed and showing the mechanism with the bolt withdrawn into th casing.

Figure 4 is a cross-sectional view through the guard screen frame, a portion of the windowframe, and the master lock, taken on line 4-4 of Figure 2.

Figure 5 is a sectional View through the frame of the guard screen and the master lock, taken on line 5-5 of Figure 4. This view also shows.

the key for the lock in position ready to be inserted in the keyhole of the master lock.

Figure 6 is a sectional view through the guard screenframe and the master look, also taken on.

line 55 of Figure 4, and similar to Figure 5 excepting that the key has been inserted in the keyhole of the lock.

Figures 7 through 14 illustrate another form of master lock utilizing a tumbler style of lock and key. This master lock may be used alone or connected in tandem with the second or spaced lock shown in Figures 1 and 2.

Figure '7 is a front view of the lock showing an operating handle and the tumbler lock with the bolt extended out of the casing.

Figure 8 is a longitudinal sectional View of the master lock, such as would be taken on line 8-8 of Figure 10, with the front plate or side removed and showing the operating mechanism therein in the position assumed thereby when the bolt is in extended position.

Figure 9 is a longitudinal sectional view of the master lock, such as would be taken on line 99 of Figur 12, showing the operating mechanism in the position assumed when the bolt is withdrawn intothe casing.

Figure 10 is a cross-sectional view through the master lock, taken on line Iii-4.5) of Figure '7.

Figure 11 is a cross-sectional view through the master lock, taken on line Il|l of Figure 8.

Figure 12 is a cross-sectional view through the master lock, taken on line I2--|2 of Figure 9.

Figure 13 is a sectional view through the guard screen showing the handle depressed into a recess therein having a shape corresponding to the handle.

Figure 14 is a front view of the handle turned to open lock position.

The invention herein includes a lgck which may be used alone or in tandem. relation with a second look, the latter being operated and controlled from the first or master lock. The two locks constitute a tandem locking mechanism which is shown in Figure 1 as being mounted in a guard screen frame 20 which is secured at one edge to a window frame 2| by means of hinges 22. A look, or particularly a tandem locking mechanism, is mounted in the opposite edge or side to lock the guard screen so that it cannot be opened except by insertion and manipulation of a key. The screen may be opened from the inside by positioning the keyhole upon the inner face of the screen frame, or the lock may be so positioned or constructed that the key is insertable from the outer face of the screen frame, whichever is desired. The guard screen may be of any suitable construction. The guard screen illustrated and described in the patent above identified is particularly suited toreceive the lock and tandem locking mechanism of this invention. The window frame 2| preferably is provided with a keeper 23 for each lock which is secured to the frame, such as by means of screws 24, and has an opening 25 therein to receive the bolt of a lock.

The master lock is mounted in a casing 39 which is secured to the guard screen frame by means such as the screws 31. The casing includes a top and bottom or ends and an edge plate 32 which may be removable, as shown, and hence is secured in position by means of screws 33. The casing also includes a pair of side walls 34 and 35, Figure 4, at least one of which is removable, by means of screws 36, for access to the locking mechanism. The edge plate has a bolt opening 31 and at least one edge of this opening slidably supports one end of the bolt.

The lock includes a bolt which may be projected from the casing into locked position and withdrawn into the casing for unlocked position. The bolt is movable and is preferably slidable from either extended or withdrawn position to the other position by means of a lever 4i carried upon a pivot 42. The pivot engages one side of the bolt 40 within the casing and supports the same thereupon for sliding movement of the bolt. The pivot therefore serves the double function enumerated. Any suitable operating connection may be provided between the lever 4| and the bolt, that particularly illustrated being a pin 43 carried by the lever and engaging in a recess particularly shown as a slot 44 in the bolt. A stop 45 carried by the casing, and preferably by the side or front Wall 34, limits the pivotal movement of the lever 4| in one direction, and the edge 46 of the lever engaging a slidable bar, to be described, provides a stop to limit pivotal movement in the other direction.

Sliding means is provided in the casing in the form of a sliding bar 50. For a tandem locking mechanism, the sliding bar extends through at least one end of the casing- 35. In the construction particularly illustrated, the sliding bar extends through both ends and hence is slidably supported by the openings through the ends of the casing and may be used in tandem with a secondary lock upon each side of the master lock. The sliding bar is operatively connected with the lever 4| in any suitable manner, such as .by means of a projection carried by one of these parts and engaging in a recess or notch in the other part. As illustrated, the projection is carried by the lever and the recess by the sliding bar.

A second pivoted means is operatively connected with the sliding bar 50 in order to slide the same, which means includes an outer cylinder and an inner cylinder 56. The outer cylinder is pivotally or rotatably secured in position at one end by a stud 51 secured to the side wall 35. The outer cylinder is also supported in position by the inner cylinder, The outer cylinder is operatively connected with the sliding bar 50 by any suitable means, such as a projection carried by one part and engaging in a recess or notch carried by the other part. The projection 58 is shown as carried by the outer cylinder and it engages in a notch 59 in the sliding bar 50. A stop pin 60 is carried by the side wall 34 and against which the projection 58 strikes in order to prevent excessive rotation of the outer cylinder 55 and so that the projection 58 cannot be completely rotated out of the notch 59. It will also be noted that in the position of the projection 58 illustrated in Figure 2, the sliding bar 55 is locked against sliding movement. The outer cylinder is retained in position against endwise movement between the side walls 34 and 35 of the casing. The inner cylinder carries a circumferential groove 6| in the outer surface thereof, and the outer cylinder carries a screw 62, Figure 4, the end of which projects into the groove and thereby retains the inner cylinder in position against axial removal or displacement from within the second cylinder,

The inner cylinder 56 has a keyhole 64 extending lengthwise thereof. At or adjacent the inner end of the keyhole is a recess or opening 65 extending through the wall of the inner cylinder and another recess or hole 66 is provided in the other or outer end thereof which is shown as being diametrically opposite the first recess, although it may have any desired angular relation thereto. The outer cylinder has a recess or hole 61 at the inner end thereof and another recess, hole, or slot 68 at the other or front end thereof and also diametrically opposite the first recess. Each recess may be in any position around the cylinder with respect to the other recess in its respective cylinder. It is essential only that the recesses in both cylinders be capable of being positioned in alignment with each other at the same time. The keyhole is large which renders it easy to clean of chewing gum, match sticks, and other things which mental patients are prone to poke into keyholes.

When the bolt 40 is in projected or extended position, the recess 61 in the outer cylinder is in alignment with a plunger 10, the end of which enters the recess 67 and locks the outer cylinder 55 against operation and hence locks the bolt in extended position. The plunger is slidably retained in position by a yoke H carried by the side wall 35 and by a hole 12 extending through the adjacent end of the casing. A

spring 13 projects through a hole 14 in the plunger and propels the latter towards the outer cylinder and into the recess 81 if it is in alignment therewith.

The plunger must be propelled out of the recess 61 in the outer cylinder in order to permit the latter to be rotated, whereby the bolt may be extended out of and withdrawn into the casing. This is accomplished by a key 89 which has a shank 8| corresponding in size and shape with the keyhole 54. At or adjacent the end of the shank 8! is a finger 82 pivotally mounted on the shank by means of a pin 83. The finger 82 must be in substantial parallel position with respect to the axis of the key or shank for insertion in the keyhole 64, in which position it is within the outer dimensions. of the shank and keyhole.

The finger 82 has a cam surface 88 so that when the finger is inserted in the keyhole, it engages an abutment which is shown as formed by the end of the keyhole s4 and, in the illustrated construction, is the stud 51, which abutment with the cam surface 98 swings the finger into a position angularly with respect to the axis of the key. The finger, as particularly shown, is rotated to a position substantially at right angles with respect to the axis of the key. Other means may be utilized to swing the finger after the key has been inserted in the keyhole.

In the angular movement of the finger 82, the finger reaches up through the recess or hole 65 in the inner cylinder, engages the end of the plunger 10, and moves the same out of locking engagement within the recess 61 of the outer cylinder. The unlocked position of the plunger 19 is illustrated in Figure 6. With the plunger removed from looking engagement in the recess, the key 80 may rotate the inner and outer cylinders which moves the recess 6! away from cooperative alignment with the plunger and also rotates the projection 58 to extend and withdraw the bolt 49 from the casing. As previously described, the cylindermeans is operatively connected with the bolt through the projection 58, sliding bar 59 and lever 4|.

The recess or hole 61 in the outer cylinder 55, as shown in Figure 2, is substantially wider than the recess 95 in the inner cylinder 55. This greater width renders the lock pickproof or difficult to pick. If anyone were to poke a bent nail or wire into the lock, he would raise the plunger 19 out of the recess 61. If he should then turn the nail, the inner cylinder would rotate but the outer cylinder would not, because of the wide recess 61, and the nail would pass and release the plunger which would drop back into locked position in the recess 61.

A pin 84 may be carried by the shank 8| and propelled by the spring 85 into contact with the finger 82 so that the latter is retained in a somewhat tilted position, thereby assuring that the finger will be cammed out of the line of the axis of the key when it engages the stud 51.

The pin is not an essential part of the lock structure since the finger can be manipulated into proper position before the key is inserted in the keyhole, however the pin does aid operation of the finger.

Means are provided in order to retain the key within the keyhole so long as the bolt 49 is withdrawn within, the casing, that is, so long as the guard screen is unlocked. Any suitable means may be utilized for accomplishing this result. The means particularly illustrated includes a hook 86 carried by the shank of the key, which hook passes through a slot 81 in the side wall 34 of the casing and enters the slot 68 in the outer cylinder. This hook 86 rides behind the wall 34 when the outer cylinder is turned by the key and prevents the keys from being withdrawn therefrom until the key is rotated to bring the hook 86 again in alignment with the slot 81, in which position the bolt is fully extended from the casing.

The outer cylinder 55 has a cylindrical outer surface 99 which contacts one side or edge of the bolt 49 and hence supports the same within the casing. It will be observed, therefore, that the outer cylinder not only performs its function as an operating means, but also serves as an inner support for one side of the bolt 49. As previously explained, the pivot 42 provides an inner support for one side or edge of the bolt. The bolt slides along the inner face of the wall 35, which wall forms part of the casing. The other face of the bolt is supported in the casing by the face of the lever 4|. It will be observed, therefore, that the lever 4| serves a double function, namely, as an operating lever and also as a support within the casing for the bolt. Three elements are therefore provided having double functions, thereby simplifying the mechanism of the lock. The bolt opening 31 in the edge plate 32 also assists in support the bolt.

The tandem lock, which is operatively coupled I with the master lock described hereinbefore, is carried in a casing 94 secured to the screen frame 20 by screws 3|. This tandem lock includes the same bolt 49 and lever 4I-used on the master lock and hence will not be described. A sliding means or bar 95 is mounted for sliding movement within the casing, the mounting particularly illustrated being holes through both ends of the casing. The sliding means or bar 95 has a recess or notch 96 which receives the projection 5| of the lever 4|.

Since the bolt in the tandem lock is operated from the master lock, the sliding bar 95 is operatively connected with the sliding bar 59 of the master look through a suitable linkage means. Any. linkage means may be used, that particularly illustrated including a link 91 secured to the sliding bars 59 and 95 by means of pins 98 at each end thereof. When the sliding bar 59 moves downwardly, as illustrated in Figure 2, the link 9! is pulled down therewith and that pulls the sliding bar 95 downwardly also. The notch 96 then rotates the link 4| so that the pin 43, engaging in the recess 44, moves the bolt 49 outwardly into locked position. Similarly, when the bolt 49 of the master lock is locked in extended position, the bolt 49 of the tandem lock is also looked in extended position because th projection 58 locks the sliding bar 59 against movement.

The other form of the invention, illustrated in Figures 7 through 14, utilizes a known cylinder style of lock and key in order to lock the bolt in extended position. In order to simplify the description, duplicate parts of this second form of lock are given the same numbers as in the first form and will not be described. The parts which are identical with the parts in the first form include the bolt 49, the lever 4|, and the sliding means or bar 59.

The sliding bar 59 is operatively connected to a cylinder means which includes an outer cylinder I99 carrying a projection |9| which engages in the recess 59 on the sliding bar. It is clear that a projection may be carried by either the cylinder or sliding bar and a recess is carried by the other part. One end of the outer cylinder is mounted upon the stud 51 and is supported against endWise movement between the side walls 34 and 35. The outer cylinder has a bore I92 therethrough to receive an inner cylinder I93. Operative connection is established between the two cylinders by means of outer cylinder which'projects into an elongated recess The segmental flat I is also longer than the segment I94, as illustrated in Figure 11, so that this relative axial movement between the two cylinders is not restricted by the segment. The inner cylinder may be pushed outwardly, if desired, by spring means which includes a pin H2 slidable in a bore H3 in which there is a spring H4 pushing against the end of the pin and against the end of the bore. When the inner cylinder is unrestrained, as will be described, the spring I I4 pushes the inner cylinder outwardly from the position shown in Figure 11 to that shown in Figure 12.

One of the purposes of this relative or outward movement of the inner cylinder is to release the handle I06 from a recess II 5 in the frame 20. In other words, when the inner cylinder is pushed all of the way into the lock or outer cylinder, the sides of the handle I05 pass into the recess H5 and prevent rotation of the handle and the inner cylinder. In addition thereto, it is impossible to loop a string, cord, necktie, or the like, over the edge of the handle, since the edge thereof is below the surface of the casing 20. This construction therefore has a double function, namely, to provide an additional lock against turning of the handle and rotation of the inner cylinder, and also to depress the handle so that no edges or projections thereof are provided over which cords, or the like, can be looped. With the inner cylinder and handle I06 in the position shown in Figure 12, the handle is released from the recess H5 so that it and the inner cylinder can be turned.

The inner cylinder is locked in depressed position by the recess III in the outer periphery thereof. A similar recess I I9 is provided through the wall of the outer cylinder in cooperative relation with the recess III. A locking lever I20 is carried upon a pivot I2I which is suitably secured to some part of the casing structure, such as the bracket I22. The end of the lever I20 enters both the recesses III and H9 when they are aligned with each other and prevents rotation of both cylinders, that is the cylinder means. In addition, the lever engages the edge of the recess III, as shown in Figure 11, and locks the inner cylinder against axial movement and thereby locks the handle I06 within the recess I I5,

The locking lever I20 is operatively connected with any suitable key lock I21, that particularly shown being a cylinder style. This operating connection includes a recess I25 carried by the lever and a projection I26 carried by the cylinder of the lock I21, which projection engages in the recess. The projection I26 is limited in its movement by a portion thereof engaging a stop I28 on the cylinder lock.

The sliding bar 50 may be operatively connected to one or more tandem looks, similar to that shown in Figure 2, in the same manner that the master lock of Figure 2 is operatively connected to the tandem lock in that figure.

The second form of master lock is operated by inserting a key in the cylinder lock I21 and rotating the cylinder thereof. This rotates the projection I26 and swings the lever I20 out of the recess III. Tins releases the handle I06 and permits it to be pulled out of the recess I I 5 or the propelling spring H4 snaps it out. The handle I 05 is then free to rotate the inner cylinder which necessarily rotates the outer cylinder through the segmental recess I05 and segment I04. Rotation of the outer cylinder pivots or rotates the projection IOI which slides the sliding bar 50 upwardly from the position shown in Figure 8 to the position shown in Figure 9, which in turn rotates the lever 4| and moves the bolt 40 into the casing so that the screen is unlocked.

If now it is desired to extend the bolt 40 to outward or locked position and the handle I06 is merely turned to the position shown in Figure 7, the key in the cylinder lock cannot be turned because the lever I20 engages the cylindrical surface of the inner cylinder I03, as shown in Figure 12. It will be observed, therefore, that with the inner cylinder and the handle I06 projected outwardly, it is impossible to lock the bolt 40 in extended position. Incidentally, the key and cylinder lock are so constructed that the key cannot be removed so long as the bolt 40 is in withdrawn or unlocked position.

In order to extend the bolt 40 outwardly or lock the screen, the handle I 06 and inner cylinder i03 must be rotated to extend the bolt which brings the handle into alignment with the recess H5 in the casing 20. The key for the cylinder lock still cannot be rotated and the lever I20 similarly cannot be moved because it still engages the outer periphery of the cylinder I03, as shown in Figure 12. In order to turn the key and remove it from the cylinder lock, it is essential to depress the handle I06 and inner cylinder I03 which brings the elongated recess III into alignment with the recess H0 and lever I20. In this depressed position, the key can be turned and the lever I20 can be rotated into the recess which locks the handle and inner cylinder in depressed position, as previously described. When this has been done, the key can be withdrawn from the cylinder lock I2'I.

This invention is presented to fill a need for improvements in a look. It is understood that various modifications in structure, as well as changes in mode of operation, assembly, and manner of use, may and often do occur to those skilled in the art, especially after benefitting from the teachings of an invention. Hence, it will be understood that this disclosure is illustrative of preferred means of embodying the invention in useful forms by explaining the construction, operation and advantages thereof.

What is claimed is:

1. A lock comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, means pivoted adjacent to and engaging the bolt to operate the same, sliding means Within the casing and engaging one side of the bolt to support the same, means connecting the pivoted means and the sliding means to pivot the former upon the sliding movement of the latter, a second pivoted means operatively connected with the sliding means to actuate the latter, and key operating means associated with the second pivoted means to pivot the same and move the bolt as aforesaid.

2. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and slidable therein so that it may be extended from and withdrawn into the casing through the opening, means pivoted adjacent to and engaging the bolt to operate the same, a pivot mounting the aforesaid means and supporting a side of the bolt within the casing, sliding means within the casing, means connecting the pivoted means and the sliding means to pivot the former upon sliding movement of the latter, and a second pivoted means operatively connected with the sliding means to actuatethe latter and slide the bolt as aforesaid.

3. A lock comprising a casing having an edge wall with an opening therein, a bolt within the casing and slidable therein so that it may be 1 tively connected with the sliding means to actuate the latter and slide the bolt as aforesaid and having a cylindrical surface supporting another side of the bolt within the casing.

4. A lock comprising a casing having an edge plate with an opening therein, a bolt within the casing and slidable therein so that it may be extended from and withdrawn into the casing through the opening, means slidably supporting two sides of the bolt, means pivoted adjacent to and operatively engaging the bolt to slide the same and engaging another side of the bolt within the casing to slidably support'the same, a pivot mounting the next aforesaid means and supporting another side of the bolt within the casing, sliding means within the casing, means connecting the pivoted means and the sliding means to pivot the former upon the sliding movement of the latter, and a second pivoted means operatively connected with the sliding means to actuate the latter and slide the bolt as aforesaid 5. A tandem lock mechanism comprising a pair of spaced casings, each casing having an edge wall with an opening therethrough, a bolt within each casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, means pivoted adjacent to and engaging each bolt to operate the same, a sliding bar means within each casing and projecting therefrom, means connecting each pivoted means and its sliding bar means to pivot the former upon the sliding movement of the latter, a second pivoted means operatively connected with the sliding bar means in one casing to actuate the same, a connecting linkage between the sliding bar means of one lock and the sliding bar means of the other lock, and key operating means associated with the second pivoted means to pivot the same and move and lock the bolt in both looks as aforesaid.

6; A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, a cylinder pivotally mounted Within the casing, means operatively connected with the bolt to actuate the latter, a locking means for the bolt actuating means including alocking recess and a recess engaging means, the latter being in locking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, a key carrying a pivoted finger which is movable from a position generally parallel with respect to the axis of the key and to a position extending at an angle with respect to the axis of the key, a keyhole-in the cylinder and receiving the key only when the finger is in generally arallel position, means extending the finger to angular position when the key is inserted in the keyhole whereupon the finger engages the recess engaging means to remove the same from looking engagement with the locking recess and to permit oscillation of the cylinder and movement of the bolt actuating means with the key, and means on the key engaging the bolt actuating means to operate the same.

7. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, a cylinder pivotally mounted within the casing, means operatively connected with the bolt to actuate the latter, a locking means for the bolt actuating means including a locking recess and a slidable plungenthe plunger being in locking relation with the looking recess when the bolt is fully extended and spaced from locking relation for all other positions of the bolt, a key carrying a pivoted finger which is movable from a position generally par allel with respect to the axis of the key to a 1 position extending at an angle with respect to the axis of the key, a keyhole in the cylinder and receiving the key only when the finger is in generally parallel position, and means extending the finger to angular position when the key is inserted in the keyhole whereupon the finger engages the plunger to remove the same from looking engagement with the locking recess and to permit pivoting of the cylinder and movement of the bolt actuating means with the key, and means on the key engaging the bolt actuating means to operate the same.

8.'A lockcomprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawing into the casing through the opening, a cylinder pivotally mounted within the casing, means operatively connected with the bolt to actuate the latter, a looking means for the bolt actuating means including a locking recess in the bolt actuating means and a recess engaging means carried Within the casing, the recess engaging means being in looking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, a key carrying a, pivoted finger which is movable to a position generally parallel with respect to the axis of the key and to a position extending at an angle with respect to the axis of the key, a keyhole in the cylinder and receiving the key only when the finger is in generally parallel position, means extending the finger to angular position when the key is inserted in the keyhole whereupon the finger engages the recess engaging means to remove the same from looking engagement with the locking recess, and means on the key engaging the bolt actuating means to operate the same.

9. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, a cylinder pivotally mounted within the casing, means operatively connecte ed with the bolt to actuate the latter, a locking means for the bolt actuating means including a locking recess and a recess engaging means, the latter being in looking relation with the locking recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, a key carrying a pivoted finger at the 'end thereof which is movable from a position generally parallel with respect to the axis of the key to a position extending at an angle with respect to the axis of the key, a cam surface carried by the key, a keyhole in the cylinder and receiving the key only when the finger is in general parallel position, the finger moving to angular position when the key is inserted in the keyhole and the cam surface of the finger engages the end thereof whereupon the finger engages the recess engaging means to remove the same from locking engagement with the locking recess and to permit operation of the cylinder and the bolt actuating means with the key, and means on the key engaging the bolt actuating means to oper ate the same.

10. A lock comprising a casing having a front wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, cylinder means pivotally mounted within the casing including an inner cylinder and an outer cylinder operatively connected with the bolt to actuate the latter upon pivotal movement, a locking means for the outer cylinder including a locking recess and a recess engaging means, the latter being in locking relation with the locking recess when the bolt is fully extended and spaced from locking relation for all other positions of the bolt, means rotatably securing the inner cylinder within the outer cylinder, a key carrying a pivoted finger which is movable to a position substantially parallel with respect to the axis of the key and to a position extending at an angle with respect to the axis of the key, a keyhole in the inner cylinder and receiving the key only when the finger is generally in parallel position, means extending the finger to angular position when the key is inserted in the keyhole, a narrow opening in the inner cylinder through which the finger projects and engages the notch engaging means but disengages therefrom upon pivoting of the inner cylinder only, and means carried by the key to pivot both cylinders simultaneously whereupon the finger engages the notch engaging means to remove the same from locking engagement with the notch and the key pivoting both of the cylinders to extend and withdraw the bolt.

11. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, cylinder means pivotally mounted within the casing including an inner cylinder and an outer cylider operatively connected with the bolt to actuate the latter upon pivotal movement, a locking means for the cylincler means including a wide locking recess in the outer cylinder and a plunger carried within the casing and substantially narrower than the locking recess, the plunger being in looking relation with the locking recess when the bolt is fully extended and spaced from locking relation for all other positions of the bolt, means rotatably securing the inner cylinder within the outer cylinder, a key carrying a pivoted finger which is movable to a position substantially parallel with respect to the axis of the key and to a position extending at an angle with respect to the axis of the key, a keyhole in the inner cylinder and receiving the key only when the finger is generally in parallel position, means extending the finger to angular position when the key is inserted in the keyhole, a narrow opening through the inner cylinder within the keyhole through which the finger projects and engages the plunger to remove the same out of the wide recess but disengages therefrom upon pivoting of the inner cylinder only, and means carried by the key to pivot both cylinders simultaneously whereupon the bolt is operated.

12. A lock comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, a cylinder pivotally mounted within the casing, means operatively connected with the bolt to actuate the latter and independent of the pivotal movement of the cylinder, a locking means for the bolt actuating means including a locking recess and a recess engaging means, the latter being in locking relation with the recess when the bolt is fully extended and spaced from locking relation for all other positions of the bolt, a keyhole in the cylinder, a recess in the cylinder extending from within the keyhole and through which the recess engaging means is releasable, and means engageable by a key to operate the bolt actuating means.

13. A look mechanism comprising a frame, a casing received within the frame and having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, a pivoted handle carried by the casing and operatively connected with the bolt to operate the same, a recess in the frame into which the handle may be depressed and held against pivoting, means within the casing retaining the handle therein and permitting it to be pulled out and depressed into the frame, and key operating means associated with the handle to lock the same in depressed position.

14. A lock mechanism comprising a frame, a casing received within the frame and having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, cylinder means mounted within the casing including an outer cylinder and a pivoted inner cylinder, the inner cylinder being operatively connected with the bolt to actuate the latter upon pivotal movement, the inner cylinder also being slidable axially of the outer cylinder, a handle secured to the inner cylinder, a recess in the frame into which the handle may be depressed and held against oscillation, a locking means for the inner cylinder including a locking recess and a recess engaging means, the latter being in locking relation with the locking recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, and a key mechanism operatively connected with the recess engaging means to remove the same from looking engagement with the looking recess thereby permitting release of the handle from the frame recess and oscillation of the inner cylinder and handle.

15. A lock mechanism comprising a frame, a casing received within the frame and having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, cylinder means pivotally mounted within the casing including an inner cylinder and an outer cylinder operatively connected with the bolt to actuate the latter upon pivotal movement, means connecting the inner cylinder with the outer cylinder for pivotal movement therewith and permitting limited axial movement with respect thereto, a handle secured to the inner cylinder, a recess in the frame into which the handle may be depressed and held against pivoting, a locking recess in the outer cylinder and inner cylinder which are in alignment only when the bolt is in extended position and the handle is depressed into the frame recess, a locking means movable into and out of the recesses, and a key mechanism operating the locking means to remove the same from locking engagement with the inner recess and to permit rotation of the cylinder means with the handle.

16. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, means pivoted adjacent to and engaging the bolt to operate the same, sliding means within the casing, means connecting the pivoted means and the sliding means to pivot the former upon the sliding movement of the latter, cylinder means including an inner and outer cylinder pivotally mounted within the easing, means operatively connecting the outer cylinder with the sliding means to actuate the bolt, means connecting the inner cylinder and the outer cylinder for pivotal movement together, a handle for the inner cylinder to pivot the cylinder means, locking means for the cylinder means including a locking recess and a recess engaging means, the latter being in looking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, and means to release the locking means.

1'7. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, means pivoted adjacent to and engaging the bolt to operate the same, sliding means within the casing, means connecting the pivoted means and the sliding means to pivot the former upon the sliding movement of the latter, cylinder means including an inner and outer cylinder pivotally mounted within the casing, means operatively connecting the outer cylinder with the sliding means to actuate the latter, the outer cylinder engaging one face of the bolt and providing support therefor, means connecting the inner cylinder and the outer cylinder for pivotal movement together, a handle for the inner cylinder to pivot the cylinder means, looking means for the cylinder means including a locking recess and a recess engaging means, the latter being in looking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, and means to release the locking means.

18. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, means pivoted adjacent to and engaging the bolt to operate the same, a pivot for the pivoted means supporting one edge of the bolt, sliding means within the casing, means connecting the pivoted means and the sliding means to pivot the former upon the sliding movement of the latter, cylinder means including an inner and outer cylinder pivotally mounted within the casing, the outer cylinder engaging and supporting the other edge of the bolt, means operatively connecting the outer cylinder with the sliding means to actuate the bolt, means connecting the inner cylinder and the outer cylinder for pivotal movement together, a handle for the inner cylinder to pivot the cylinder means, a locking means for the cylinder means including a locking recess and a recess engaging means, the latter being in locking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, and means to release the locking means.

19. A look comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casin through the opening, means pivoted adjacent to and engaging the bolt to operate the same, the pivoted means engaging and supporting a side of the bolt, a pivot for the pivoted means supporting one edge of the bolt, sliding means within the casing, means connecting the pivoted means and the sliding means to pivot the former upon the sliding movement of the latter, cylinder means including an inner and outer cylinder pivotally mounted within the casing, the outer cylinder engaging and supporting the other edge of the bolt, means operatively connecting .the outer cylinder with the sliding means to actuat the bolt, means connecting the inner cylinder and the outer cylinder for pivotal movement together, a handle for the inner cylinder to pivot the cylinder means, locking means for the cylinder means including a locking recess and a recess engaging means, the latter being in looking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, and means to release the locking means.

20. A lock comprising a casing having an edge wall with an opening therein, a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening, cylinder means including an inner and an outer cylinder pivotally mounted within the casing, means operatively connecting the outer cylinder with the bolt to actuate the latter upon pivoting of the outer cylinder, means connecting the inner cylinder and the outer cylinder for pivotal movement together, and looking means preventing pivoting of the outer cylinder including a locking recess and a recess engaging means, the latter being in locking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt and being releasable by a key.

21. A look comprising a casing having an edge wall with an opening therein; a bolt within the casing and movable therein so that it may be extended from and withdrawn into the casing through the opening; cylinder means including an inner and an outer cylinder pivotally mounted within the casing, means connecting the inner cylinder and the outer cylinder for pivotal movement together, and a handle operatively connected with the cylinder means to pivot the same; means operatively connecting the outer cylinder with the bolt to actuate the latter; and a looking means for the cylinder means including a locking recess and a recess engaging means, the latter being in looking relation with the recess when the bolt is fully extended and spaced from looking relation for all other positions of the bolt, the locking means being released by axial movement of the handle.

CARL J. HAGSTROM. 

